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dev: update __dev_notify_flags() to send rtnl msg

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This patch only prepares the next one, there is no functional change.
Now, __dev_notify_flags() can also be used to notify flags changes via
rtnetlink.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Nicolas Dichtel 2013-09-25 12:02:44 +02:00 committed by David S. Miller
parent e058495126
commit a528c219df
3 changed files with 10 additions and 8 deletions
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4
include/linux/netdevice.h
View File

@ -2378,7 +2378,9 @@ extern int dev_ethtool(struct net *net, struct ifreq *);
extern unsigned int dev_get_flags(const struct net_device *); extern unsigned int dev_get_flags(const struct net_device *);
extern int __dev_change_flags(struct net_device *, unsigned int flags); extern int __dev_change_flags(struct net_device *, unsigned int flags);
extern int dev_change_flags(struct net_device *, unsigned int); extern int dev_change_flags(struct net_device *, unsigned int);
extern void __dev_notify_flags(struct net_device *, unsigned int old_flags); void __dev_notify_flags(struct net_device *,
unsigned int old_flags,
unsigned int gchanges);
extern int dev_change_name(struct net_device *, const char *); extern int dev_change_name(struct net_device *, const char *);
extern int dev_set_alias(struct net_device *, const char *, size_t); extern int dev_set_alias(struct net_device *, const char *, size_t);
extern int dev_change_net_namespace(struct net_device *, extern int dev_change_net_namespace(struct net_device *,

11
net/core/dev.c
View File

@ -5235,10 +5235,14 @@ int __dev_change_flags(struct net_device *dev, unsigned int flags)
return ret; return ret;
} }
void __dev_notify_flags(struct net_device *dev, unsigned int old_flags) void __dev_notify_flags(struct net_device *dev, unsigned int old_flags,
unsigned int gchanges)
{ {
unsigned int changes = dev->flags ^ old_flags; unsigned int changes = dev->flags ^ old_flags;
if (gchanges)
rtmsg_ifinfo(RTM_NEWLINK, dev, gchanges);
if (changes & IFF_UP) { if (changes & IFF_UP) {
if (dev->flags & IFF_UP) if (dev->flags & IFF_UP)
call_netdevice_notifiers(NETDEV_UP, dev); call_netdevice_notifiers(NETDEV_UP, dev);
@ -5274,10 +5278,7 @@ int dev_change_flags(struct net_device *dev, unsigned int flags)
return ret; return ret;
changes = old_flags ^ dev->flags; changes = old_flags ^ dev->flags;
if (changes) __dev_notify_flags(dev, old_flags, changes);
rtmsg_ifinfo(RTM_NEWLINK, dev, changes);
__dev_notify_flags(dev, old_flags);
return ret; return ret;
} }
EXPORT_SYMBOL(dev_change_flags); EXPORT_SYMBOL(dev_change_flags);

3
net/core/rtnetlink.c
View File

@ -1647,9 +1647,8 @@ int rtnl_configure_link(struct net_device *dev, const struct ifinfomsg *ifm)
} }
dev->rtnl_link_state = RTNL_LINK_INITIALIZED; dev->rtnl_link_state = RTNL_LINK_INITIALIZED;
rtmsg_ifinfo(RTM_NEWLINK, dev, ~0U);
__dev_notify_flags(dev, old_flags); __dev_notify_flags(dev, old_flags, ~0U);
return 0; return 0;
} }
EXPORT_SYMBOL(rtnl_configure_link); EXPORT_SYMBOL(rtnl_configure_link);